public OverloadedMethod add(MethodAccess methodAccess) {
if (lock) {
Exceptions.die();
}
methodAccessList.add(methodAccess);
if (!methodAccess.method().isVarArgs()) {
List<MethodAccess> methodAccesses =
methodAccessListByArgNumber.get(methodAccess.parameterTypes().length);
if (methodAccesses == null) {
methodAccesses = new ArrayList<>();
methodAccessListByArgNumber.set(methodAccess.parameterTypes().length, methodAccesses);
}
methodAccesses.add(methodAccess);
} else {
List<MethodAccess> methodAccesses =
methodAccessListByArgNumberWithVarArg.get(methodAccess.parameterTypes().length);
if (methodAccesses == null) {
methodAccesses = new ArrayList<>();
methodAccessListByArgNumberWithVarArg.set(
methodAccess.parameterTypes().length, methodAccesses);
}
methodAccesses.add(methodAccess);
}
return this;
}
private void invokeEventMethod(Event<Object> event, MethodAccess methodAccess, Object listener) {
if (event.body() instanceof Object[]) {
methodAccess.invokeDynamic(listener, (Object[]) event.body());
} else if (event.body() instanceof List) {
final List body = (List) event.body();
methodAccess.invokeDynamic(listener, body.toArray(new Object[body.size()]));
} else {
methodAccess.invokeDynamic(listener, event.body());
}
}
@SuppressWarnings("Convert2Lambda")
private void extractListenerForRegularObject(
final Object listener,
final MethodAccess methodAccess,
final String channel,
final boolean consume) {
logger.info(
"EventManager {}:: {} is listening with method {} on channel {} and is consuming? {}",
name,
listener.getClass().getSimpleName(),
methodAccess.name(),
channel,
consume);
if (consume) {
/* Do not use Lambda, this has to be a consume! */
this.register(
channel,
new EventConsumer<Object>() {
@Override
public void listen(Event<Object> event) {
invokeEventMethod(event, methodAccess, listener);
}
});
} else {
/* Do not use Lambda, this has to be a subscriber! */
this.register(
channel,
new EventSubscriber<Object>() {
@Override
public void listen(Event<Object> event) {
invokeEventMethod(event, methodAccess, listener);
}
});
}
}
private void extractEventListenerFromMethod(
final Object listener,
final MethodAccess methodAccess,
final AnnotationData listen,
final ServiceQueue serviceQueue) {
logger.info(
"EventManager {} ::extractEventListenerFromMethod :: "
+ "{} is listening with method {} using annotation data {} ",
name,
serviceQueue,
methodAccess.name(),
listen.getValues());
final String channel = listen.getValues().get("value").toString();
final boolean consume = (boolean) listen.getValues().get("consume");
if (serviceQueue == null) {
extractListenerForRegularObject(listener, methodAccess, channel, consume);
} else {
extractListenerForService(serviceQueue, channel, consume);
}
}
@Override
public Object invokeDynamic(Object object, Object... args) {
final int length = args.length;
final List<MethodAccess> methodAccesses = this.methodAccessListByArgNumber.get(length);
int maxScore = Integer.MIN_VALUE;
MethodAccess methodAccess = null;
for (MethodAccess m : methodAccesses) {
int score = 1;
final List<TypeType> paramTypeEnumList = m.paramTypeEnumList();
if (object == null && !m.isStatic()) {
continue;
}
loop:
for (int argIndex = 0; argIndex < args.length; argIndex++) {
TypeType type = paramTypeEnumList.get(argIndex);
Object arg = args[argIndex];
final TypeType instanceType = TypeType.getInstanceType(arg);
if (instanceType == type) {
score += 2_000;
continue;
}
switch (type) {
case BYTE_WRAPPER:
case BYTE:
score = handleByteArg(score, arg, instanceType);
break;
case SHORT_WRAPPER:
case SHORT:
score = handleShortArg(score, arg, instanceType);
break;
case INTEGER_WRAPPER:
case INT:
score = handleIntArg(score, arg, instanceType);
break;
case NULL:
score--;
break;
case LONG_WRAPPER:
case LONG:
score = handleLongArg(score, arg, instanceType);
break;
case FLOAT_WRAPPER:
case FLOAT:
score = handleFloatArg(score, arg, instanceType);
break;
case DOUBLE_WRAPPER:
case DOUBLE:
score = handleDoubleArg(score, arg, instanceType);
break;
case CHAR_WRAPPER:
case CHAR:
if (instanceType == TypeType.CHAR || instanceType == TypeType.CHAR_WRAPPER) {
score += 1000;
}
break;
case STRING:
if (instanceType == TypeType.STRING) {
score += 1_000;
} else if (instanceType == TypeType.CHAR_SEQUENCE || arg instanceof CharSequence) {
score += 500;
}
break;
case INSTANCE:
if (instanceType == TypeType.INSTANCE) {
if (m.parameterTypes()[argIndex].isInstance(arg)) {
score += 1000;
}
} else if (instanceType == TypeType.MAP) {
score += 1_000;
} else if (instanceType == TypeType.LIST) {
score += 500;
}
break;
default:
if (instanceType == type) {
score += 1000;
} else {
if (m.parameterTypes()[argIndex].isInstance(arg)) {
score += 1000;
}
}
}
}
if (score > maxScore) {
maxScore = score;
methodAccess = m;
}
}
if (methodAccess != null) {
return methodAccess.invokeDynamic(object, args);
} else {
/* Place holder for now. */
List<MethodAccess> varargMethods = this.methodAccessListByArgNumberWithVarArg.get(0);
if (varargMethods != null) {
varargMethods.get(0).invokeDynamic(args);
}
}
return null;
}
private void doListen(final Object listener, final ServiceQueue serviceQueue) {
if (debug) {
logger.debug(
"EventManager {} registering listener {} with serviceQueue {}",
name,
listener,
serviceQueue);
}
final ClassMeta<?> listenerClassMeta = ClassMeta.classMeta(listener.getClass());
final Iterable<MethodAccess> listenerMethods = listenerClassMeta.methods();
/* Add methods as listeners if they have a listen annotation. */
for (final MethodAccess methodAccess : listenerMethods) {
AnnotationData listenAnnotationData = getListenAnnotation(methodAccess);
if (listenAnnotationData == null) continue;
extractEventListenerFromMethod(listener, methodAccess, listenAnnotationData, serviceQueue);
}
/* Look for listener channel implementations. */
final Class<?>[] interfacesFromListener = listenerClassMeta.cls().getInterfaces();
/* Iterate through interfaces and see if any are marked with the event channel annotation. */
for (Class<?> interfaceClass : interfacesFromListener) {
final ClassMeta<?> metaFromListenerInterface = classMeta(interfaceClass);
final AnnotationData eventChannelAnnotation =
metaFromListenerInterface.annotation(AnnotationUtils.EVENT_CHANNEL_ANNOTATION_NAME);
if (eventChannelAnnotation == null) {
continue;
}
/* If we got this far, then we are dealing with an event channel interface
so register the methods from this interface as channel listeners.
*/
final Iterable<MethodAccess> interfaceMethods = metaFromListenerInterface.methods();
final String classEventBusName =
getClassEventChannelName(metaFromListenerInterface, eventChannelAnnotation);
for (MethodAccess methodAccess : interfaceMethods) {
/* By default the method name forms part of the event bus name,
but this can be overridden by the EVENT_CHANNEL_ANNOTATION_NAME annotation on the method.
*/
final AnnotationData methodAnnotation =
methodAccess.annotation(AnnotationUtils.EVENT_CHANNEL_ANNOTATION_NAME);
String methodEventBusName =
methodAnnotation != null && methodAnnotation.getValues().get("value") != null
? methodAnnotation.getValues().get("value").toString()
: null;
if (Str.isEmpty(methodEventBusName)) {
methodEventBusName = methodAccess.name();
}
final String channelName = createChannelName(null, classEventBusName, methodEventBusName);
if (serviceQueue == null) {
extractListenerForRegularObject(listener, methodAccess, channelName, false);
} else {
extractListenerForService(serviceQueue, channelName, false);
}
}
}
}
public Response<Object> mapArgsAsyncHandlersAndInvoke(
MethodCall<Object> serviceMethodCall, MethodAccess serviceMethod) {
if (serviceMethod.parameterTypes().length == 0
&& !(serviceMethod.returnType() == Promise.class)) {
Object returnValue =
serviceMethod.invokeDynamicObject(boonServiceMethodCallHandler.service, null);
return boonServiceMethodCallHandler.response(serviceMethod, serviceMethodCall, returnValue);
}
boolean hasHandlers =
boonServiceMethodCallHandler.hasHandlers(serviceMethodCall, serviceMethod);
Object returnValue;
if (hasHandlers) {
Object body = serviceMethodCall.body();
List<Object> argsList =
boonServiceMethodCallHandler.prepareArgumentList(
serviceMethodCall, serviceMethod.parameterTypes());
if (body instanceof List || body instanceof Object[]) {
boonServiceMethodCallHandler.extractHandlersFromArgumentList(
serviceMethodCall.callback(), serviceMethod, body, argsList);
} else {
if (argsList.size() == 1 && !(argsList.get(0) instanceof Callback)) {
argsList.set(0, body);
}
}
returnValue =
serviceMethod.invokeDynamicObject(boonServiceMethodCallHandler.service, argsList);
if (returnValue instanceof Promise) {
final Promise<Object> promise = ((Promise<Object>) returnValue);
promise
.then(
value -> {
boonServiceMethodCallHandler.responseSendQueue.send(
ResponseImpl.response(serviceMethodCall, value));
})
.catchError(
error -> {
boonServiceMethodCallHandler.responseSendQueue.send(
ResponseImpl.error(serviceMethodCall, error));
})
.invoke();
return ServiceConstants.VOID;
}
} else {
if (serviceMethodCall.body() instanceof List) {
final List argsList = (List) serviceMethodCall.body();
returnValue =
serviceMethod.invokeDynamic(
boonServiceMethodCallHandler.service,
argsList.toArray(new Object[argsList.size()]));
} else if (serviceMethodCall.body() instanceof Object[]) {
final Object[] argsList = (Object[]) serviceMethodCall.body();
returnValue = serviceMethod.invokeDynamic(boonServiceMethodCallHandler.service, argsList);
} else {
returnValue =
serviceMethod.invokeDynamic(
boonServiceMethodCallHandler.service, serviceMethodCall.body());
}
}
return boonServiceMethodCallHandler.response(serviceMethod, serviceMethodCall, returnValue);
}